88b342402c136ce00e10531f4eeffd533fe8437acdf56a64f8da1e4ed46559c6

General

Target

2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe
Size

96KB
MD5

0fbd5c3dc60fa07a407eb8d70d9fe6d5
SHA1

a91f2aab5c43164e2e32584c3f013381642e0624
SHA256

88b342402c136ce00e10531f4eeffd533fe8437acdf56a64f8da1e4ed46559c6
SHA512

778c1dc1e6e8560c399d9e4bc9b047215717cac2e0b221a86fe871b00d147f9a70287d868a30351327f44e9df66b90d054c084b2fa5a5273e5497eff18742a74
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTMRpAhc+3NOPrXqQllw:ZhpAyazIlyazTMRNrXqQle

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3344	sH8KkyGQWv8w8wc.exe
3016	CTS.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5108	2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe
Token: SeDebugPrivilege	3016	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5108 wrote to memory of 3344	5108	2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe	82
PID 5108 wrote to memory of 3344	5108	2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe	82
PID 5108 wrote to memory of 3016	5108	2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe	84
PID 5108 wrote to memory of 3016	5108	2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe	84
PID 5108 wrote to memory of 3016	5108	2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-04_0fbd5c3dc60fa07a407eb8d70d9fe6d5_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5108
- C:\Users\Admin\AppData\Local\Temp\sH8KkyGQWv8w8wc.exe
  C:\Users\Admin\AppData\Local\Temp\sH8KkyGQWv8w8wc.exe
  2⤵
  - Executes dropped EXE
  PID:3344
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
392KB

MD5
9a9142f77fae6d253b0cc9fba318d4f5

SHA1
267ee6853f66407e42b9fce4a85b7a3e599edffd

SHA256
311e282ace2811e1be0f2c6d715ddf927d61d8058e0644a95692d7344872d370

SHA512
272b5d4975c2157754050b0d118c6a487a8f3cea593eb954f56d370fbb07165332bf8768222d3ad9703a3e34a01a60897aae98724a75ad0be20d4d7b161c2dd8

Download Submit
C:\Users\Admin\AppData\Local\Temp\sH8KkyGQWv8w8wc.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/3344-8-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads